Chemistry concepts and calculations

1. Determine whether a reaction will take place in the following and write a com

1. Determine whether a reaction will take place in the following and write a complete balanced equation: You must include phase labels. Use NR for no reaction. Ca(OH)2 (aq) + Al(N…

1. Determined the oxidation number of the phosphorus, sulfur, and nitrogen in ea

1. Determined the oxidation number of the phosphorus, sulfur, and nitrogen in each of the following compounds. H2PO4-    SO32-    N2O4 2. Which of the following statements is true…

1. Develop a report using word-processing software. In that report, address the

1. Develop a report using word-processing software. In that report, address the following: a. Identify the element(s) that you could include on your Web site that would convey to …

1. Developed the first differential stain for visualizing bacteria with the ligh

1. Developed the first differential stain for visualizing bacteria with the light microscope a. edward jenner b. louis pasteur c. joseph lister d. alexander flemming e. hans chris…

1. Dielectric constant of wate:r (a) What is the (static) dielectric constant of

1. Dielectric constant of wate:r (a) What is the (static) dielectric constant of a medium? Why does water have a large dielectric constant? (b) How does the dielectric constant of…

1. Diethyl Ether is often used as a solvent in the lab for extraction of organic

1. Diethyl Ether is often used as a solvent in the lab for extraction of organic products. How does its polarity and boiling point favor its use? Many solvents are toxic and/or hi…

1. Dinitrogen pentoxide, N 2 O 5 , decomposes by first order kinetics with a rat

1. Dinitrogen pentoxide, N2O5, decomposes by first order kinetics with a rate constant of 3.7 x 10-5 s-1 at 298K. (a) What is the half-life in hours for the decomposition; (b) if …

1. Discuss the differences between Web 2.0 and the Traditional Web. Give specifi

1. Discuss the differences between Web 2.0 and the Traditional Web. Give specific examples of how Web 2.0 applications can create interpersonal connections and how doing so can af…

1. Discuss the relative buffering abilities of solutions 1a-5a when challenged b

1. Discuss the relative buffering abilities of solutions 1a-5a when challenged by the addition of 0.3 mL of acid. Be sure to also compare the solutions to the negative control, wa…

1. Discuss the similarities in the tests to confirm the presence of chloride ion

1.   Discuss the similarities in the tests to confirm the presence of chloride ion and silver ion (from 14A). 2.   Discuss the use of Ksp and solubilities to separate AgCl from Ag…

1. Discuss what the following errors or changes in procedure will have on your t

1. Discuss what the following errors or changes in procedure will have on your titration and on the calculated molar mass of your acid a.Reached the endpoint prior to all of the a…

1. Distinguish between the following pairs of terms as they pertain to this expe

1. Distinguish between the following pairs of terms as they pertain to this experiment. (a) monoprotic and diprotic acids (b) equivalence point and end point of a titration (c) ha…

1. Do a literature search to find the surface plasmon resonance wavelengths for

1. Do a literature search to find the surface plasmon resonance wavelengths for spherical gold nanoparticles with diameters of ~10 nm and of ~50 nm in aqueous solution. 1. Do a li…

1. Do a literature search to find the surface plasmon resonance wavelengths for

1. Do a literature search to find the surface plasmon resonance wavelengths for spherical gold nanoparticles with diameters of ~10 nm and of ~50 nm in aqueous solution. 1. Do a li…

1. Do an Internet search for each of the items listed below. Based on this infor

1. Do an Internet search for each of the items listed below. Based on this information, determine whether each is part of the core ideas, frontier ideas or fringe ideas in science…

1. Do they seem to converge on a particular equilibrium? How long do you think i

1. Do they seem to converge on a particular equilibrium? How long do you think it might take based on your observations? 2. How long do you think it might take based on your obser…

1. Do you believe your recrystallized acetylsalicyloc acid to be very pure? expl

1. Do you believe your recrystallized acetylsalicyloc acid to be very pure? explain. 2. The solubility of benzoic acid in water is 68 g per 1 L at 95 degrees C and 1.7 g per 1 L a…

1. Do you expect permanganate ion (MnO 4 - ) to oxidize bromide ion to bromine l

1. Do you expect permanganate ion (MnO4-) to oxidize bromide ion to bromine liquid in acidic solution? A. The oxidation of bromide ion by permanganate ion is a spontaneous reactio…

1. Does bubbling ammonia through a solution raise or lower the pH? Explain 2. A

1. Does bubbling ammonia through a solution raise or lower the pH? Explain 2. A chemist knows that a solution contains metal ions. She adds sodium chloride to the solution for sol…

1. Does bubbling ammonia through a solution raise or lower the pH? Explain 2. A

1. Does bubbling ammonia through a solution raise or lower the pH? Explain 2. A chemist knows that a solution contains metal ions. She adds sodium chloride to the solution for sol…

1. Does the pH increase, decrease or remain the same on the addition of the of t

1. Does the pH increase, decrease or remain the same on the addition of the of the following? a.) LiF to an HF solution b.)KI to an HI solution c.)NH4Cl to an NH3 solution d.) HBr…

1. Does the vapor pressure of a compound increase or decrease with increasing mo

1. Does the vapor pressure of a compound increase or decrease with increasing mole ratio? 2. What is true about the vapor pressure above a mixture of two hydrocarbons in a distill…

1. Download pointers.cpp 2. Write the definition for the init_Student() function

1. Download pointers.cpp 2. Write the definition for the init_Student() function. This function should ask the user for all required information. 3. Write a function to print the …

1. Download the file(DATE LOCATED AT THE BOTTOM) for this laboratory exercise, t

1. Download the file(DATE LOCATED AT THE BOTTOM) for this laboratory exercise, then run the Python shell and enter the following commands: >>> import date(located at the …

1. Draw one example of a complex IV inhibitor. Given that it blocks electron tra

1. Draw one example of a complex IV inhibitor. Given that it blocks electron transport, what can you infer about the reduction potential of the inhibitor compared to that of oxyge…

1. Draw the MO diagram (including valence electrons) for CN–. The AOs should ref

1. Draw the MO diagram (including valence electrons) for CN–. The AOs should reflect the valence orbital potential energies (labeled with values in eV) . Explain your choice of MO…

1. Draw the alcohol that is the product of the reduction of 3-methylpentanal. 2.

1. Draw the alcohol that is the product of the reduction of 3-methylpentanal. 2. Draw the compound that would produce 4-ethyl-3-hexanol in the presence of a nickel catalyst and hy…

1. Draw the bond-line structure for structure for (2S,3R)-3-deutero-2-ethyloxira

1. Draw the bond-line structure for structure for (2S,3R)-3-deutero-2-ethyloxirane . 2. Using bond-line structures, draw the reaction that would give this epoxide using meta-chlor…

1. Draw the structural drawing of each requested solvent. Assume kerosene has 13

1. Draw the structural drawing of each requested solvent. Assume kerosene has 13 carbons (in reality it is a mixture of many hydrocarbons.) If a solvent has both a polar section a…

1. Draw the structure of the product of permanganate hydroxylation of each of th

1. Draw the structure of the product of permanganate hydroxylation of each of the following. Pay careful attention to the stereochemistry of the product. Be sure to draw all enant…

1. Draw the structures of the major products for the reaction of 2- METHYLBUTENE

1. Draw the structures of the major products for the reaction of 2- METHYLBUTENE with each of the following reagents. Clearly indicate the STEREOCHEMISTRY of the products. a) HBr …

1. Due to your snooping roommate, you decide to build a circuit for an electroni

1. Due to your snooping roommate, you decide to build a circuit for an electronic buzzer. Digging around, you found some solder (composition 90wt% Pb, 10% Sn) and a soldering iron…

1. During El Nina the stronger trade winds are driven by an air pressure that de

1. During El Nina the stronger trade winds are driven by an air pressure that decreases westward across the pacific. The higher wind speeds occur becauxe the ar pressure differenc…

1. During chemical weathering, forsterite is dissolved by the carbonic acid in r

1. During chemical weathering, forsterite is dissolved by the carbonic acid in rainwater. The weathering reaction is: Mg2SiO4 forsterite + 4H2CO3 (aq) 2Mg2+ + 4HCO3- + H4SiO4 (aq)…

1. During recrystallization, an orange solution of a compound in hot alcohol was

1. During recrystallization, an orange solution of a compound in hot alcohol was treated with activated carbon and then filtered through fluted paper. On cooling, the filtrate gav…

1. During the extraction of spinach, you will shake the spinach with a mixture o

1. During the extraction of spinach, you will shake the spinach with a mixture of acetone, hexane and water. You will encounter the following two problems during the extraction. E…

1. During the extraction of trimyristin from nutmeg, two students were given dif

   1. During the extraction of trimyristin from nutmeg, two students were given different samples of nutmeg. They noticed that one sample was very fragrant with the characteristic…

1. During the set-up of a distillation or a boiling point apparatus, the positio

1. During the set-up of a distillation or a boiling point apparatus, the position of the bulb of the thermometer is crucial. Why is it so important in order to obtain accurate res…

1. During the titration of an unknown weak acid with NaOH, it was determined tha

1. During the titration of an unknown weak acid with NaOH, it was determined that the pH=4.36 after 16.24 mL of 0.0984 F NaOH was added. This pH and volume was measured before the…

1. Each cycle leng thens the fatty acid chain by three carbon atoms. 2. The reac

1. Each cycle lengthens the fatty acid chain by three carbon atoms. 2. The reactions of lipogenesis include, but are not limited to, condensation, reduction, and dehydration. 3. M…

1. Each time a mixture containing equal amounts of compounds A, B, C is injected

1. Each time a mixture containing equal amounts of compounds A, B, C is injected into a gas chromatograph, compound B gives a signal that is only half the size of the signal from …

1. Ecell after adding 6 M NH3 to the copper cell. Calculate the concentration of

1. Ecell after adding 6 M NH3 to the copper cell. Calculate the concentration of that copper (II) ion that is in equilibrium with the complexed copper (II) ion, Cu(NH3)4^2+ in the…

1. Effect of the dissociation constant of the acid (Ka) on the shape of the titr

1. Effect of the dissociation constant of the acid (Ka) on the shape of the titration curve. The value of Ka affects the shape of the titration curve for a weak acid/strong base t…

1. Electric field inside a hollow metallic charged sphere (a) increases towards

1. Electric field inside a hollow metallic charged sphere (a) increases towards the center. (b) is zero. (c) is none of the other options. (d) depends on the total charge of the s…

1. Electrolysis has many important industrial applications Which of these is NOT

1. Electrolysis has many important industrial applications Which of these is NOT correct? 5. Which of the following does not accurately (a) Nuclear fusion is the combining of two …

1. Electromagnetic radiation travels through vacuum at a speed of ___m/s? 2. A l

1. Electromagnetic radiation travels through vacuum at a speed of ___m/s? 2. A local radio station often broadcast on the 6-meter band. The frequency of this electromagnetic radia…

1. Elijah has observed that more people run on sunny days as compared to rainy d

1. Elijah has observed that more people run on sunny days as compared to rainy days. The relationship between the amount of sun and the amount of people running is a(n) _____. a) …

1. Elijah has observed that more people run on sunny days as compared to rainy d

1. Elijah has observed that more people run on sunny days as compared to rainy days. The relationship between the amount of sun and the amount of people running is a(n) _____. a) …

1. Enough of a monoprotic acid is dissolved in water to produce a 0.0127 M solut

1. Enough of a monoprotic acid is dissolved in water to produce a 0.0127 M solution. The pH of the resulting solution is 6.30. Calculate the Ka for the acid. 2. Carbon dioxide dis…

1. Enough of a monoprotic acid is dissolved in water to produce a 0.0127 M solut

1. Enough of a monoprotic acid is dissolved in water to produce a 0.0127 M solution. The pH of the resulting solution is 6.30. Calculate the Ka for the acid. 2. Carbon dioxide dis…